Wrench.



L. E. GIISSERI WRENCH.

APPucATloN FILED APR. 29, 1915.

1 91 60, 1 GO, A Patented Nov. 16, 1915.

2 SHEETS-SHEET l.

Witnesses S: lajjg/'lnven'rcor l Attorneys n/Pn co..WAsMlNuToN D c L. E. GAISSER.

WRENCH.

APPLICATION FILED APR. 29, 1915.

1,169,160. Pa1en1edN0v.16,1 915.

2 SHEETS-SHEET 2.

Witnesses r I Attorneys ATENE FFICE.

l LOUIS E. GAISSER, 0F LOUISVILLE, KENTUCKY.

WRENCH.

Specification of Letters Patent.

Patented Nov. 16, 1915.

Application filed April 29, 1915. Serial No. 24,775.

To all whom it may concern:

Be it known that I, LOUIS E. GAIssER, a citizen of the United States, residing at Louisville, in the county ofY Jefferson and State of'Kentucky, have invented a new and useful l/Vrench, of which the following is a l specification.

This invention relates to improvements in wrenches, one of its objects being to provide a wrench which may be instantly adjusted to objects of dierent sizes and promptly disengaged therefrom without the operation of rotating an adjusting screw or the like such as is commonly necessary. k

Another object is to provide a wrench which is formed of but few parts, can be made at slight cost, is durable, and will not readily get out of order. j

A further object is to provide a wrench the 'parts of which are so assembledas to relieve the fastening means and pivots of lateral strains, which would tend to `break and unduly wear the parts.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and V claimed, it being understood Ithat changes in the precisel embodiment `of the invention herein disclosed can be made within the 'scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings the preferred forms of the invention have been shown.

In said drawings I-Figure 1 is a plan view of a wrench embodyingv the present improvements. Fig. 2is a side elevation thereof. Fig. 8 is a plan view with the cover plate removed, a portion of the slide being shown in section. Fig. 4 is a section on the line A-B of F iggl. Fig. 5 is a perspective View of the removable jaw and its slide. Fig. 6 is a perspective view of the fixed jaw and the head of the wrench, the cover plate being removed. Fig. 7 is a plan View of the head of the wrench constructed for use as a pipe wrench. Fig. 8 is a View partly in longitudinal section and partly in elevation of a slightly modified form of wrench. Fig. 9 is a section on line C-D Fig. 8. Fig. 10 is a plan view of a modified form of lever. Fig. 11 is a transverse section through a modified form of slide. 12 is a transverse section through another form of slide.

Referring tothe figures by characters of reference 1 designates the head of the Wrench, the same being provided with a shallow angular channel 2 extending from one side to the other thereof. From the front of this head projects the fixed jaw 3 of the wrench and, as shown, thetop of the jaw may be formed at the outer side thereof with an angular recess 4. Upstanding from the rear portion of the head adjacent each side thereof are bosses 5, the top faces of the bosses being in the same plane with the top of the jaw 3 and each boss as well as the jaw being provided with a threaded stud 6 extending upwardly therefrom. One of the bosses 5 has arounded nger piece 7 extending obliquely therefrom. Formed in the head 1 and between the bosses is an opening 8.

f Slidably mounted in the channel 2 is a block 9 from which extends a movable jaw 10 of thewrench, this movable jaw being loca-ted at one endY of the block and there being an opening 1l extending through the block from the front to the rear thereof. As shown particularly in Fig. 3 the end 'walls of the opening' 11 are preferably ogee shaped, as at l2 although it is to be understood that they can be of any other contour desired. The jaw 10 is extended upwardly and downwardly beyond the block 9 from which it extends and is designed to lap the front face of the head 1 and to likewise lap the front edge of the cover plate 13 which rests on the jaw 3 and the bosses 5.and has openings 14 for the reception of the studs 6.

An opening l5 is formed in the cover plate 13 between the bosses 5 and it is to be understood that the rear corner portions of the cover plate 13 are cut away to form seats for engaging the upper ends of the bosses 5,

as shown in Fig. 4 wherein the seats haveV been illustrated at 16. Furthermore the cover plate is provided, upon that portion thereof engaging the fixed jaw 3, with an angular extension 17 adapted to rest within the recess 4.

Extending into the openings 8 and 15 are trunnions 18 extending upwardly and downwardly from a combined handle and lever 19 one end of which is extended into the opening 11 in block 9 and has a head 20 formed with rounded sides adapted to engage the walls 12 of the opening 1l.

InV assembling the parts the head 2O of lever 19 is inserted into opening 11 and.

the st uds 6 can be upset thus'to constitute rivets for holding the parts together. W ith 1 the parts thus assembled it will be apparent in proportion that by swinOing handle 19 in one direction relative to the head 1, the block 9 will be slid so as to move jaw l() away from the jaw 3 whereupon an object tobe gripped can be placed between the jaws. By then swinging handle 19 in the opposite direction, jaws 10 and 3 will be adjusted toward each other and bind upon the inserted object, the degree of pressure upon said object increasing to the pressure exerted upon the handle or lever 19. By means of the finf struction.

ger piece 7, the head 1 and handle or lever 19 can be readily shifted relative to each other for the purpose of applying the jaws to or disengaging them from the object therebetween. By providing the seats 16 in the rear corners of the cover plate. 13 andby providing the projection 17 for extending into the recess 4 it will be apparent that the cover plate, when in position, is held against lateral shifting relative to the head 1 and, consequently, the studs 6 are relieved of transverse strain and the same is likewise true of the trunnions 13.

It is` to be understood that instead of constructing the wrench with straight jaws such as used for engaging nuts and bolts, the said jaws can be formed with recesses 21, as shown in Fig. 7, each recess receiving a toothed jaw plate 22 dove-tailed into the Vjawas shown and adapted to be secured by Thus the means of a binding screw 23. wrench would be adapted for use as a pipe wrench.

1n FigxS another modified form of wrench has been illustrated. This wrench includes a slidable bloclr 24 which may be similar to the block 9 and which carries a jaw similar to the jaw 10 or of any other desired conr1`he recess 25 in the block 24 receives one end of trunnions 2,7 surrounded by ball' races 2.8, the balls 29 in these races being arranged to bear upon opposed walls of the wrench, as

shown in Fig. 8. Thus friction is materially reduced. As a means for preventing the block or slide 24 from shifting readily out of proper position during the adjustment of the wrench, a groove 30 may be formed in the plate 31 which corresponds with the plate 13 and in this groove may be seated a 32 bearing frictionally against the then placed on theA a lever 26 having its slide or block 24 so as thus to resist the movement of said bloclr. Consequently the vblock will vremain in anyposition to which it may be pushed by the lever 25 and no difculty will be experienced in adjusting the wrench.

nstead of shaping the lever as heretofore described, the same may be formed with oppositely extending rounded wings 33 at the block engaging end thereof, thus to present rounded friction surfaces. Furthermore, the lever may be formed with bearing trunnions 34 the diameter` of Vwhich is equal to the width of the lever'. This construction has been shown in Fig. 10. lInstead of forming the blocks 9 and 24: with slots or recesses such as shown for example in Fig. 3, the

side walls 35 of the recess 36 may converge toward the jaw 37 carried by the block or, if desired, and as shown inFig. 12, the side walls of the recess 38 in rounded, as at 39, thus to provide a smooth bearing for the rounded portions 33 of the shifting lever. Y 1' Obviously various other modifications may be made in wrench without departing of the present invention.

What is claimed is a Y 1. A. wrench including a transversely grooved head, ,upstandingi spaced ybosses thereon, a from the head and upstanding therefrom, a block slidably mounted within the Vgroove of the head, a jaw movable with thebloclr,

from V.the spirit the block having an opening therein, a cover l plate bearing upon the fixed jaw andl bosses and projecting between the bosses, fastening means extending from the bosses and the fixed Vjaw and into the cover plate, saidr bosses cooperating with the cover plate to relieve `the fastening devices of transverse strain, a combined handle and lever pro# jecting into the opening intherbloclr,V .and trunnions extending from the lever into the head and cover plate.

Y2. 1n a wrench the combination with a head and a transverse upstanding from the bosses upstanding from the rear corner of the head, and a finger piece extending from one of the bosses, of cover plate bearing groove, a' fixed jaw upon the jaw and bosses and having -cut away corners for the reception of the'bosses, said bosses and cover plate coperatingto hold the plate against lateral displacement relative to the head, aprojection on the the opening in the block and trunnions upon the block may be fixed jaw extending forwardly` front of the,Y head,

the construction of the iis iso

the lever engaging the head and cover plate at points between the bosses.

3. A wrench including a transversely grooved head, upstanding spaced bosses thereon, a fixed jaw extending forwardly from the head and upstanding therefrom, a block slidably mounted within the groove and the head, a jaw movable with the block, the block having an opening therein, a cover plate bearing upon the fixed jaw and bosses and projecting between the bosses, fastening means extending from the bosses and the iixed jaw and into the cover plate, said bosses coperating with the cover plate to relieve the fastening devices of transverse strain, a combined handle and lever vprojecting into the opening in the block, trunnions extending from the lever into the head and cover plate, and a spring interposed between the cover plate and bearing against the block.

4. A wrench includingr a head, a fixed jaw extending forwardly therefrom, a block slidably mounted within and adapted to move transversely of the head, a jaw movable with the block, a bow spring seated in the head and frictionally engaging the block, Y

a combined handle and lever pivotally mounted in the head and extending therebeyond, means within said head for transmitting motion from said combined handle and lever to the block toslide said block transversely of the head during the pivotal movement of the combined handle and lever, and a finger piece fixed on the head and extending rearwardly therefrom in reach of a hand grasping the combined handle and lever.-

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses. v

LOUIS E. GAISSER. lVitnesses:

ROGERS KING, WM. C. Cnoss.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

